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| Number | Title | Issue Date |
| 8163858 | Copolymers for barriers A polyvinylidene difluoride copolymer with a fluoroolefin selected from 2,3,3,3-tetrafluoropropene, 1,1,3,3,3-pentafluoropropene, 2-chloro-pentafluoropropene, hexafluoropropylene, trifluoroethylene, chlorotrifluoroethylene, 3,3,3-trifluoro-2-trifluoromethylpropene a... | 04/24/2012 |
| 7612154 | Fluoroelastomers Fluoroelastomers, curable by peroxidic route, obtainable by polymerizing the following monomers: a) C2-C8 hydrogenated fluoroolefins; b) fluorovinylethers of general formula: CFX═CXOCF2OR (... | 11/03/2009 |
| 7378475 | Process for making vinyl fluoride interpolymers and dispersions thereof Interpolymers of 1-99 mol % vinyl fluoride and 99-1 mol % of at least one highly fluorinated monomer such as tetrafluoroethylene are disclosed. The interpolymers are characterized by the presence of ionic end groups and are prepared by polymerizing VF and fluorinate... | 05/27/2008 |
| 7375171 | Process for preparing vulcanizable fluorine-containing elastomer The present invention provides a process for preparing a fluorine-containing elastomer in a high productivity comparable to that of non-iodine transfer polymerization process by carrying out an iodine transfer polymerization at high pressure. The present invention a... | 05/20/2008 |
| 7345124 | Process for preparing fluorine-containing polymer The present invention provides a process for preparing a fluorine-containing polymer having few branched chains and little weight change in high temperatures, which is a new process wherein composition distribution substantially does not occur. The fluorine-containi... | 03/18/2008 |
| 7332554 | Polymers with new sequence distributions The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers with new sequence distributions. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene,... | 02/19/2008 |
| 7332555 | Polymers with new sequence distributions The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers with new sequence distributions. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene,... | 02/19/2008 |
| 7314904 | Functionalized polyalphaolefins Disclosed is a composition of a functionalized polyalphaolefin comprising the reaction product of admixing (a) an alpha-olefin monomer having at least 10 carbon atoms; (b) an unsaturated functionalizing compound; and (c) a polymerization initializer, under reaction ... | 01/01/2008 |
| 7285612 | Partially fluorinated copolymer based on trifluorostyrene and substituted vinyl compound and ionic conductive polymer membrane formed therefrom A trifluorostyrene and substituted vinyl compound based partially fluorinated copolymer, an ionic conductive polymer membrane including the same, and a fuel cell adopting the ionic conductive polymer membrane, wherein the partially fluorinated copolymer has formula ... | 10/23/2007 |
| 7276287 | Melt-processible poly(tetrafluoroethylene) Melt-processible, thermoplastic poly(tetrafluoroethylene) (PTFE) compositions are disclosed and methods for making and processing same. Additionally, products comprising these compositions are described. ... | 10/02/2007 |
| 7232872 | Polymerization processes The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent. ... | 06/19/2007 |
| 7220487 | Ambient cured flexible fluoroelastomer coatings and coated products The present invention provides an ambient temperature curable fluoroelastomer coatings and coated articles to provide improved elongation, and adhesion to substrates especially flexible elastomeric substrates. The curable coating mixture is a mixture of two parts, p... | 05/22/2007 |
| 7214750 | Polymerization processes The invention relates to new processes to produce polymers utilizing bayonette cooled slurry reactor systems and diluents including hydrofluorocarbons. ... | 05/08/2007 |
| 7214740 | Fluorinated ionomers with reduced amounts of carbonyl end groups The present invention is a fluoropolymer comprising a plurality of pendent groups terminating in —CF2SO3X, —CF2SO2F, or combinations thereof, where X is selected from a group consisting of H+ and a monovalen... | 05/08/2007 |
| 7211629 | Process for the preparation of low fuming fluoropolymer The present invention relates to the reduction of oligomer content of melt-processible fluoropolymer so that the fluoropolymer has at least 25 ppm less oligomer than the as-polymerized fluoropolymer, the reduction being obtained by melting the fluoropolymer forming ... | 05/01/2007 |
| 7199198 | Fluororubber base sealant composition and fluororubber base sealant A fluororubber sealant composition includes 100 parts by weight of a fluororubber, which is a copolymer having a cross-linking site derived from a bromine-containing and/or iodine-containing compound, capable of crosslinking with peroxide and having a component unit... | 04/03/2007 |
| 7183365 | Electroactive fluorene polymers having perfluoroalkyl groups, process for preparing such polymers and devices made with such polymers The present invention is generally directed to perfluoroalkylated fluorene polymers. It further relates to a process for preparing the polymers and devices that are made with the polymers. ... | 02/27/2007 |
| 7176265 | Directly polymerized low molecular weight granular polytetrafluoroethylene A process for producing low molecular weight, granular polytetrafluoroethylene or modified polytetrafluoroethylene by suspension polymerization of pressurized tetrafluoroethylene in an agitated reaction vessel. The polymerization is conducted in aqueous medium in th... | 02/13/2007 |
| 7173098 | Process for producing fluoropolymer The present invention has for its object to provide a method of producing fluoropolymers with high productivity under comparatively low temperature and low pressure conditions which are conducive to reduced cost of commercial-scale production equipment. The present ... | 02/06/2007 |
| 7148301 | High purity fluoropolymers The invention relates to high purity fluoropolymers and processes for making such materials. These polymers are particularly suited for applications in the semiconductor industry. The process comprises removal of unstable polymer end groups by fluorination and remov... | 12/12/2006 |
| 7132489 | Fluorine-containing amphoteric polymer for surface coating and preparation method thereof The present invention relates to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof, in particular, to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof in which a hydrocarbon compoun... | 11/07/2006 |
| 7112640 | Fluorocopolymer and its applications A fluorocopolymer which comprises repeating units (a) based on tetrafluoroethylene and/or chlorotrifluoroethylene, repeating units (b) based on a cyclic hydrocarbon monomer having a dicarboxylic anhydride group and an endocyclic polymerizable unsaturated group, and ... | 09/26/2006 |
| 7101943 | Peroxide-curable fluoroelastomers Fluoroelastomers, curable by peroxidic route, obtainable by polymerizing the following monomers: a) C2–C8 hydrogenated fluoroolefins; b) fluorovinylethers of general formula: CFX═CXOCF2OR ... | 09/05/2006 |
| 7094469 | Porous or non-porous substrate coated with an immobilized polymeric composition having sulfonyl groups and hydrophilic functional groups and process A porous or non-porous polymeric substrate having its surface modified with an immobilized fluorocarbon such as perfluorocarbon, polymeric composition is provided. The immobilized fluorocarbon is formed from a monomer having formula: [T—SO2Y—SO2 | 08/22/2006 |
| 7091295 | Amorphous perfluorinated polymers Use of amorphous perfluorinated polymers for preparing transparent films at 157 nm, said perfluorinated polymers being free from unstable ionic end groups COF, COOH or their amidic derivatives, esters or salts, said polymers formed by cyclic units deriving from perf... | 08/15/2006 |
| 7084225 | Process for preparation of a tetrafluoroethylene copolymer A polymerization process for producing a copolymer of tetrafluoroethylene and (perfluorobutyl)ethylene, prepared by an aqueous dispersion polymerization technique, and the resin produced thereby, are provided. This copolymer contains a relatively small amount, betwe... | 08/01/2006 |
| 7071272 | Method for preparing unsaturated compound by pyrolysis reaction The present invention provides a method for preparing a compound of CF3CF2CF2OCF═CF2 by pyrolyzing a compound expressed by CF3CF2CF2OCF(CF3)COOCF2CF(CF3)O... | 07/04/2006 |
| 7037950 | Partially fluorinated copolymer based on trifluorostyrene and substituted vinyl compound and ionic conductive polymer membrane formed therefrom A trifluorostyrene and substituted vinyl compound based partially fluorinated copolymer, an ionic conductive polymer membrane including the same, and a fuel cell adopting the ionic conductive polymer membrane, wherein the partially fluorinated copolymer has formula ... | 05/02/2006 |
| 7022457 | Photoresists with hydroxylated, photoacid-cleavable groups The present invention pertains to photoimaging and the use of photoresists (positive-working and/or negative-working) for imaging in the production of semiconductor devices. The present invention also pertains to novel hydroxy ester-containing polymer compositions t... | 04/04/2006 |
| 7014883 | Apparatus and method for forming a composite structure A method for forming a composite structure is disclosed. The method includes four steps. Step one calls for applying a primer (104) to a surface (102) of a tool (100). Step two requires applying a coating (106) to primer (104). Ste... | 03/21/2006 |
| 6997057 | Sound pollution surveillance system and method A system for detecting a sound level of vehicles comprising sensor units for detecting vehicles on a road and for measuring a sound level of a detected vehicle. A data processing unit is connected to the sensor units and has an identification recorder for operating ... | 02/14/2006 |
| 6984704 | Fluorinated compound, fluoropolymer and process for its production To provide a fluoropolymer which has a high concentration of functional groups to provide adequate characteristics of the functional groups and which brings about no decrease of Tg. A fluoropolymer having monomer units formed by cyclopolymerization of a funct... | 01/10/2006 |
| 6982308 | PTFE-based formulation for the insulation of integrated circuits A formulation based on the PTFE, homopolymer or modified, comprising: 1) latex of said PTFE having a particle diameter between 5 and 100 nm, comprising an anionic fluorinated surfactant in an amount in the range 2–25% by weight based on the PTFE;... | 01/03/2006 |
| 6933357 | Ultra-clean fluoropolymers High purity fluoropolymers are obtained by the emulsion polymerization process, removing essentially all ions and coagulating the polymer essentially without adding ions. These polymers are useful in the field of electronic devices. ... | 08/23/2005 |
| 6911513 | Fluorinated diene compound and fluoropolymer, and methods for their production A novel fluoropolymer which can be an optical resin material having a low refractive index and excellent heat resistance, and a novel fluorinated diene compound having two unsaturated bonds, capable of presenting such a fluoropolymer, are presented. Further, by virt... | 06/28/2005 |
| 6903173 | Fluorinated polymers Disclosed are block copolymers and end-functionalized polymers containing in their backbones at least one fluoro alkyl (meth)acrylate mer unit comprising —C6F13, —C4F9, or —C3F7. ... | 06/07/2005 |
| 6872503 | Copolymers for photoresists and processes therefor Fluoroolefin/acid group or protected acid group-containing copolymers for photoresist compositions and microlithography methods employing the photoresist compositions are described. These copolymer compositions comprise 1) at least one fluoroolefin, preferably hexaf... | 03/29/2005 |
| 6870018 | Vulcanizable flouroelastomer composition A vulcanizable fluorine-containing elastomer composition having excellent stability in molding and kneading property, from which a vulcanized article having a small compression set can be produced in a short period of time. The vulcanizable fluorine-containing elast... | 03/22/2005 |
| 6858692 | Fluorinated compound, fluoropolymer and process for its production A fluoropolymer having repeating units formed by cyclopolymerization of a functional group-containing fluorinated diene represented by the following formula: CF2═CR1-Q-CR2═CH2 (1) wherein each ... | 02/22/2005 |
| 6849377 | Photoresists, polymers and processes for microlithography Photoresists and associated processes for microlithography in the extreme, far, and near UV are disclosed. The photoresists in some embodiments comprise (a) a fluorine-containing copolymer derived from at least one polycyclic ethylenically unsaturated compound and a... | 02/01/2005 |
